Push-button spraying device with safety cap



May 20, 1958 F. GALl-:Azzl

PUSH-BUTTON SPRAYING DEVICE WITH SAFETY CAP Filed July 20, 1954 IN V ENTQR.

PUSH-BUTTON SPRAYING DEVICE WITH SAFETY CAP Franco Galeazzi, Milan,Italy Application July 20, 1954, Serial No. 444,567 Claims priority,application Italy July 24, 1953 1 Claim. (Cl. 299-95) The presentinvention relates to a spraying device with a safety cap, particularlyfor the spraying of scents, cosmetics, disinfectants and the like.

There are known devices for the spraying of substances by means of agaseous pressure provided inside the vessel, particularly for scents,cosmetics, disinfectants and the like, constituted essentially by avessel provided with one or more spraying nozzles and with a meansadapted to ensure an airtight closure after introducing the substance tobe sprayed (in liquid or powdery condition) together with a liquidhaving a boiling temperature somewhat below ordinary temperature, insuch a manner that at ordinary temperature the content be urged to comeout by effect of the gaseous pressure created inside the vessel. Thespraying of the substance under pressure takes place through the seat ofa valve the stern whereof is controlled by means of a springedpush-button projecting externally from the member adapted to ensuretightness, in such a manner as to put the immersion tube incommunication with the spraying nozzle.

The devices made in this way offer the inconvenience of requiring acareful wrapping or packaging in order to avoid unintentional sprayingof the content, the push-button for controlling the intercepting valvebeing subject to receiving accidental impacts.

Another inconvenience of the aforesaid devices is that the push-buttonis subject to being depressed involuntarily when the device is beinggripped to be used or to be displaced.

It is an object of the present invention to eliminate the abovementioned inconveniences by providing the aforementioned devices with asafety cap to protect the control push-button for the interceptingvalve.

In particular, the invention relates to a spraying device comprising acover provided with one or more nozzles and that can be screwed onto theneck of the vessel destined to contain the substances under pressure tobe sprayed and an intercepting valve accommodated inside said cover, thestern of which is actuated by means of a springed push-button,characterized in that the pushbutton projects from the cover through acavity having transversal dimensions larger than those of thepush-button in such a manner as to provide an interspace into which isfitted, to touch the bottom of said cavity, a safety cap having internaltransversal dimensions larger than the external transversal dimensionsof the push-button and external transversal dimensions essentially equalto the internal dimensions of the cavity in such a manner as to beforced against the internal lateral surface of the said cavity.

In the accompanying drawing, the single figure represents a verticalaxial section of a spraying device with a safety cap according to thepresent invention applied thereto. f

With reference to the drawing, with l isdndicated the vessel destined tocontain the substances to be sprayed, provided with a neck 2 threadedexternally.

United States Patent O 2,835,534 PatentedM-ay `2o, 195s ice On the neck2 there is fitted the member 4 in such a way that it rests thereon withthe intermediary of an interposed gasket 3. The member 4 surroundsexternally said neck 2 over a certain length and inside said neck 2 itis shaped as a small cup 5 to which is connected the immersion tube 6.

0n said neck there is screwed the cover 7 containing the mushroom-shapedvalve 8 which has its stem screwed to the push-button 9 urged to returnupwards by the helical spring 10 and which with the member 4 abuts andprovides tightness against the gasket 11 which is pressed against themember 4 by a shaped body 12 having a central hole 13 for the passage ofthe stem of the valve and a conduit 14 opening into the annular chamber15 that comes to be formed between the body 12 and the cover 7 andwhichis in communication with the nozzle 16.

The small cup 5 acts a-s a provisional sealing disc, which is perforatedby the point with which the valve 8 is provided. Tightness in respect tothe push-button 9 is ensured by the membrane 17.

The push-button 9 projects from the cover 7 through the cavity 18 havingcircular section with a diameter larger than that of the push-button 9in such a manner as to provide an interspace into which is fitted so asto bear against the bottom 2t) of said cavity, a safety cap 19 having aninternal diameter larger than that of the pushf' button and an externaldiameter substantially equal to that of the cavity in such a way as tobe forced against the internal lateral surface of said cavity The cap isof transparent synthetic material to allow inspection of the inside ofthe push-button.

The spraying device is known per se and has been described in itsparticulars merely for the purpose to more clearly illustrate theapplication and employment of the safety cap, but it is understoodthat'the scope of the present invention comprises only the applicationof the cap as hereinbefore specified.

From the above it will be apparent that with the devices provided withsafety caps, the push-button is no longer subject to accidental impactscausing unintentional spraying of the substances contained in thevessel.

What I claim is:

In a spraying device for dispensing material as a spray from a containeradapted to hold such material in liquid form under pressure andincluding a cover member adapted to be fixed on the neck of thecontainer and having an outlet means in communication with the interiorof the neck of the container, a valve means controlling suchcommunication and a push button actuator for the valve means; theimprovement which comprises said cover member having an upper end formedwith an axial cavity in which the push button actuator is slidablydisposed, said cavity being of a cross-sectional area only slightlygreater than the cross-sectional area of the push button actuator and ahollow transparent cup-shaped safety cap member having an open end and aclosed end, said safety cap member being of an external cross-sectionalarea and configuration similar to the cross-sectional configuration andarea of the cavity to fit snugly in the cavity and be frictionallyretained therein and being of an internal crosssectional area justslightly greater than the cross-sectional area of the push buttonactuator and said cavity having an inwardly extending shoulder at itslower end against which the edge of the open end of the safety capmember abuts to space the closed end thereof slightly above the pushbutton actuator and locate the safety cap member around the push buttonactuator in slightly spaced relationship therewith so that the capmember assists in keeping the actuator in correct position to preventcanting of the valve means, and said closed end of the safety cap memberhaving a peripheral outwardly protruding enlargement for gripping thecap member to pull it axially from the cavity.

References Cited in the le of this patent UNITED STATES PATENTS RothemApr. 7, 1931

